Seeing more UGC in the SERPs...?

Generally, when I see User Generated Content (UGC) in the Google Search Engine Results Pages (SERPs). I rate that SERP as being ripe for SEO/Keyword targeting with my own content.

In other words, when i see content from Twitter, Reddit, Facebook, LinkedIn, advert or job sites. I rate these sites as being UGC.

However, i'm seeing more and more UGC content these days from the Google algorithm. Am i still right in asserting these are low-difficulty Google SERPs? Or will i have to change my approach?